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Science STAAR Review 1

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Science STAAR Review 1
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84.  At room temperature this element is a very stable gas.  How many neutrons are in this atom?

48
36
84
120

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What types of particles are found in the cloud surrounding the atom's nucleus?

Positively charged particles and negatively charged particles.
Negatively charged particles only
Neutral particles and positively charged particles
Positively charged particles only

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A student draws the odel shown.  Which of these best compares the conditions at Location X and Location Y?

It is day at Location X and night at Location Y.
It is winter at Location X and summer at Location Y.
There are more hours of daylight at Location X than at Location Y.
The moon is brighter when viewed from Location X than when viewed from Location Y.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The weather map shows the weather conditions for one day across the United States.  Based on the weather map, which city will most likely experience decreasing temperatures during the next 24 hours?

Denver, because it is raining there.
Minneapolis, because a cold front is approaching
Atlanta, because a warm front is approaching
Houston, because it is in a high pressure area.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The image shows a plate boundary.  Arrows have been added to indicate the movement of the plates.
What plate boundary feature is shown?

A ridge formed by an inactive convergent boundary
A valley forming at an active divergent boundary.
A fault forming at an active transform boundary
A volcano formed by an active transform boundary

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Coal contains carbon and other elements.  Carbon dioxide forms when coal burns in the presence of oxygen.  Which of these is the best evidence that a chemical reaction occurs when coal burns?

The shape of the coal changes.
Oxygen is present.
A new substance is produced.
Coal is made up of more than one element.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A bus travels 20 km in 30 minutes.  What is the average speed of the bus?

20 km/hr
30 km/hr
40 km/hr
50 km/hr

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